How to stop and disable some unnecessary services

[myVesta]

If you have small RAM, you can stop and disable some services.

ClamAV (scan incoming emails against viruses, sometimes this service can take up to 2GB of RAM)

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systemctl stop clamav-daemon.service
systemctl disable clamav-daemon.service

systemctl stop clamav-freshclam.service
systemctl disable clamav-freshclam.service

sed -i "s/^CLAMD =/#CLAMD =/g" /etc/exim4/exim4.conf.template
systemctl restart exim4

SpamAssassin (scan incoming emails against spam):

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# on Debian >= 12
systemctl stop spamd.service
systemctl disable spamd.service

# on Debian < 12
systemctl stop spamassassin.service
systemctl disable spamassassin.service

sed -i "s/^SPAMASSASSIN =/#SPAMASSASSIN =/g" /etc/exim4/exim4.conf.template
sed -i "s/^SPAM_SCORE =/#SPAM_SCORE =/g" /etc/exim4/exim4.conf.template
systemctl restart exim4

Dovecot (provide IMAP and POP3 access):

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systemctl stop dovecot.service
systemctl stop dovecot.socket
systemctl disable dovecot.service

ProFTPD (provides FTP access):

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systemctl stop proftpd.service
systemctl disable proftpd.service

Fail2ban (blocks bots from brute-force attack (guessing the passwords) on ssh/ftp/imap/pop3/smtp):

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systemctl stop fail2ban.service
systemctl disable fail2ban.service

Bind or Bind9 is an open source implementation of DNS, available for almost all Linux distributions. BIND stands Berkeley Internet Name Domain & it allows us to publish DNS information on internet as well as allows us to resolve DNS queries for the users. BIND is by far the most used DNS software on Internet.
Disable Bind9 ONLY if you are using external DNS Nameservers (such as CloudFlare)

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systemctl stop bind9
systemctl disable bind9

Stop certain PHP-FPM version (instead of 8.2 you can insert desired version)

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systemctl stop php8.2-fpm
systemctl disable php8.2-fpm

[T4B]

I stopped ClamAV what commands needs to run to start it again ?

[jmos]

reverse the dissable

Code: Select all

systemctl start clamav-daemon.service
systemctl enable clamav-daemon.service

systemctl start clamav-freshclam.service
systemctl enable clamav-freshclam.service

sed -i "s/^#CLAMD =/CLAMD =/g" /etc/exim4/exim4.conf.template
systemctl restart exim4